/Engine/Plugins/VirtualProduction/LevelSnapshots/Source/LevelSnapshotsEditor/Public/LevelSnapshotsEditorFunctionLibrary.h
If the snapshot is saved in the registry, takes a screenshot of the editor scene and sets it as thumnail for the snapshot.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="LevelSnapshots") static void GenerateThumbnailForSnapshotAsset ( [ULevelSnapshot](API\Plugins\LevelSnapshots\Data\ULevelSnapshot) * SnapshotPackage )